A simple three ingredient marmalade to make when Seville oranges are in season! Delicious on toast or use to glaze cakes.
In order to check for the setting point, place a teaspoonful of marmalade onto a chilled plate. Allow to cool for a moment and the push it with your finger. If a crinkly skin has formed, then it is set. If it hasn't set, boil again for another 5 minutes and retest.